Braking device to automatically stop the loom



Jan. 22, 1935. J P7 CAMPS 1,988,540

BRAKING DEVICE T0 AUTOMATICALLY STOP THE LOOM Filed Aug. 22, 1932 Patented Jan. 22, 1935 I 1 h 'BitmNG nEvioEwonU'iroMmroahL 1 non uman-M 1 Ju'eii Pieaiiei.;o ape,.jsaba3ie 1jsptii iilmipiieetien August 22, 19a, sesame. era-5,.

In Spain March 28, 1932 1 Claim. (Cl. 139-345) This invention refers to improvement in the braking device to automatically stop the loom.

The braking devices known up to the present, for automatically stopping the loom, suffer from the drawback that in looms which work at high speed, due to the stop mechanism being united to the slay, oscillations are produced, which drawback is so serious that the attempt is made to avoid it in the stop mechanism by fitting a spring which exerts a force in contact with the swell of the shuttle. The more we increase the number of revolutions of the loom, the more pressure we must exercise against this tongue or swell,

and thus the shuttle will experience difilculty in entering, so we must make a shuttle driving mechanism exert a superior force.

In practice it is easily observed that a loom of the kind called movable com works with greater regularity, because in these looms the stop mechanism does not exist, and therefor the pressure exercised by the stop above indicated against the swell does not occur, the shuttle entering easily, and less force being employed.

The improvement which is the object of this invention consists in a device in which a lever fixed to the framing of the loom, which comes in contact with one end of the stop and with the crank in its high position, will control the shuttle to ensure that it has properly entered the box.

By the foregoing it will be understood that the oscillation of the stop in its movement is avoided, giving great facility to the entrance of the shuttle, and, while in other looms provided with stops the stop must always be in contact with the tongue, in this case it is only in contact with it in the position shown in Fig. '1, and this constitutes a control mechanism for when the shuttle does not completely enter the box.

In the attached drawing a form of execution of the improvement is shown.

Fig. 1 is a side view of the mechanism. Fig. 2 is a detail drawing of the mechanism. Fig. 3 is a frontview of the mechanism, parts being omitted for convenience of illustration and Fig. 4 a plan of a portion of the mechanism. Referring to the drawing in detail: 1 is the box of the automatic stop mechanism, 2 tongue or swell on the shuttle box, 3 shuttle, 4 shuttle guide, 5 the bearing on the lay of the loom in which is mounted the shaft 24 carrying the crank 6, 7 the roller mounted on the end of the crank 6, 8 the pivoted lever having projections 8 at one end lying above and below the roller 7, 9 the stop lever mounted to rock with the lever 8,

5 10 the catch or frog of the 100111 coacting with the 21 the lever pivoted on the lay which bears on the tongue or swell 2 and is actuated by the roller 20, 22 the collar holding the end of spring 12 to the pin 13, 23 the outer end of the lay and 25 the buffer on the frame to retain the rocking lever 11. The arrows indicate the movement of the loom and of the crank.

The mechanism works as follows:Thecrank 18 together with the connecting rod 19 produces the to and fro motion to the lay sword 14, the end 16 of the lever 8 coming in contact with the rocking lever 11 through the medium of the contact roller 15. The lever 11 with its spring 12 is held by means of a fixed buffer 25 on the framing in order to ensure a constant predetermined initial position of the rocking lever 11. The spring 12 exerts a pressure holding the rocking lever 11 in the position as indicated in Fig. 1. Each time the crank is in the position indicated in Fig. 1 the said contact will takeplace producing a rocking movement of the lever 11, and the pressure exerted by spring 12 on lever 11 can be transmitted through the lever 8 to the roller 7 fixed at the end of crank 6 mounted on shaft 24. adapted to rock with the lever 8. The shaft 24 passes along the lay of the loom and the other end carries a crank 6 which coacts with a lever 8 so that a similar mechanism is provided on each side of the loom which act in unison so that should the shuttle fail to enter either shuttle box the lever 9 will be rocked into position to coact with the catch or frog 10. Pressure will be exerted on the shuttle 3, when as shown by Fig. land Fig. 4 it is inside the box. In this case the stop lever 9 will not be able to connect with the catch 10, and consequently the loom will not stop. If, on the contrary for any reason the shuttle does not enter the box, the part 11 will be free to transmit the force of the spring 12 to the parts 20 and 21, and therefore it will cause stop lever 9 to descend until connection is made with the catch 10, thereby effecting the instantaneous stoppage of the loom. If, on the contrary, for any reason the shuttle does not enter the box, the part 11 will be free to transmit its force through the spring 12 at the The stop lever 9 is end er the piece 20 and 21 corresponding to it, and

therefore it will cause the stop lever 9 to descend until connection is made with the part 10, in this way bringing about the instantaneous stoppage of the loom.

This device is very simple, rapid, and infallible in its working, and it, therefore, represents a most important improvement in looms.

A shuttle control mechanism for automatically stopping the loom, comprising in combination with the shuttle, a crank, a connecting rod mounted on said crank, a pivotpin'carried by said 1: connecting rod, a. lay sword connected to said pivot a pin and adapted to be oscillated bysaidconnect ing rod, a pivoted oscillating lever on said pin" having a downwardly projecting endl and an uplever carried by said pin adapted to engage in said patchzthrough the intermediary of said spring and first mentioned pivoted lever when the shuttle does not enter said box and thereby stop 15 thelo'o'm. y

. f-rJUAN PICANOL CAMPS. 

